Improvement in water-meters



T. T.P'nosszn.

I Water-Meters. No, 142,650, Patented September 9,1873.

- finvenTbrz TREAT T. PROSSER, OF CHICAGO, ILLINOIS, ASSIGNOR OFONE-HALF HIS RIGHT TO GEORGE C. MORGAN, OF SAME PLACE.

V IMPROVEMENT IN WATER-METERS.

Specification forming part of Letters Patent No. 142,650, datedSeptember 9, 1873; application filed March 24, 1873. y

To all whom it may concern:

Be it known that I, TREAT T. PROSSER, of the city of Chicago, in thecounty of Cook and State of Illinois, have invented certain new anduseful Improvements in Water-Meters, of which the following is a fulldescription, reference being had to the accompanying drawings making apart of this specification, in which 7 Figure 1 is an elevation; Fig. 2,a vertical section; Fig. 3, a detail, showing the shaft and screwsections thereon; and Fig. 4, an end view of the same.

My invention consists in providing a cylinder with a shaft on which areplaced, a little distance apart, right and left hand double screwsections; in connecting with the cylinder two chambers, one of whichcommunicates with the cylinder at points outside of the screw sections,the other communicates with the cylinder at a point between the twoscrew sections-to one of these chambers a receiving-pipe can beattached, and to the other a dischargepipe; and in the devices andcombinations hereinafter claimed.

In the drawings, a represents a cylinder; 1) 0, two chambers, onelocated each side of the cylinder. An inlet-pipe, d, communicates withthe chamber 1), and an outlet-pipe, c, with the chamber 0. From thechamber 1) there are two openings, '5, into the cylinder at, whichopenings are outside of the screw sections. h is an opening from thechamber 0 into the cylinder at, which opening h is located between thetwo screw sections. 10 is a shaft on which the right and left handdouble screw ure of the water upon the ends of the shaft is will keepthe shaft and ground-joint mentioned in a proper place.

The screw sections m I make hollow, so

that they and the shaft may be as nearly water-balanced as possible, soas to facilitate the rotation of the same by the action of the water.The form and position of the channels 1 on these screw sections isclearly represented in Fig. 3. These sections m fit nicely in thecylinder, so that the water only passes through the channels 1".

It is essential that the ends of those portions of the screw sections mwhich fit within the cylinder to, and which form thewalls of thechannels r, do not terminate opposite each other, but lap by, as shownin Fig. 3, so that the water cannot pass through the same without actingthereon.

In operation, water passes into the chamber 1) thence through theopening 6 into the cylinder a; thence through the channels 1' in thesections m into the space between these sections; thence out through theopening it into the chamber 0; and thence into the discharge-pipe e. Theaction of the water as it passes through the screw-sections m, rotatingthem and operating the registering devices connected with the shaft 70.V The device might be so connected to the inlet and outlet pipes thatthe water should flow first into the chamber 0, then through It into thespace between the screw sections on; then through the sections andopenings 0' into the chamber 1), and out through the pipe d.

All the parts of the meter'can be most conveniently made of metal.

The drawings represent a full-sized meter; but other sizes may be used.

The shaft 70 may be made hollow, if desired.

WVhat I claim as new is as follows:

1.. A fluid-meter consisting of the chamber or cylinder at, havingmounted therein the shaft is with thescrew-wheels m, having theirspirals arranged in opposite directions, in combination with theauxiliary chamber 0 with its passage 71., and the chamber I) with itspassages it, all constructed and arranged to operate substantially asdescribed.

2. The arrangement of the cylinder to with its shaft 70, and screwwheels m, and the chambers b and c, all as herein set forth.

T. T. PROSSER.

Witnesses:

E. A. WEsT, O. W. Bonn.

FFICE.

